Enhanced microburst ultrasonic power delivery system and method
AssigneeAdvanced Medical Optics, Inc.
InventorsKenneth E. Kadziauskas, Paul W. Rockley
Life of this patent
Estimating the term…
Abstract
A method and apparatus for delivering energy during a surgical procedure such as phacoemulsification is provided. The method and apparatus include applying energy during at least one pulsed energy on period, comprising applying energy during a series of short burst periods, the short burst periods interspersed by short rest periods. The method and apparatus further comprise delivering minimal energy during a long off period, the long off period comprising a relatively long period when minimal energy is applied, wherein one long off period follows each pulsed energy on period. The short burst periods and the short rest periods are relatively brief in duration as compared with the long off period.
Claims31
An ophthalmic surgical method, comprising:
- selectively applying ultrasonic energy during at least one pulsed energy on period, comprising:
- bursting ultrasonic energy during a series of short burst periods, said short burst periods interspersed by short rest periods wherein minimal energy is applied;
- and
- selectively refraining from delivering energy during a long off period, the long off period having a long off period duration less than approximately one second, the long off period comprising a relatively long period when minimal energy is applied, and one long off period following each pulsed energy on period;
- wherein said short burst periods and said short rest periods are relatively brief in duration as compared with said long off period.
An apparatus comprising:
- a handpiece having a needle, the handpiece configured to ultrasonically vibrate said needle;
- a power source configured to provide pulsed electrical power to the handpiece;
- an input device configured to enable an operator to select an amplitude of ultrasonic vibration;
- and
- a controller configured to control power supplied to the handpiece during a surgical procedure, said controller configured to control power supplied by applying ultrasonic power during at least one pulsed energy on period followed by at least one long off period, the pulsed energy on period comprising a series of short burst periods, said short burst periods interspersed by short rest periods of minimal amplitude, wherein said short burst periods and said short rest periods are relatively brief in duration as compared with said long off period.
An apparatus comprising:
- a handpiece having a needle, said handpiece configured to ultrasonically vibrate said needle;
- a power source configured to provide pulsed electrical power to the handpiece;
- an input device configured to enable an operator to select an amplitude of ultrasonic vibration;
- and
- a controller configured to control power supplied to the handpiece, said controller configured to control power supplied by applying ultrasonic power during at least one pulsed energy on period, wherein applying ultrasonic power during the pulsed energy on period comprises applying power during a series of short burst periods, said short burst periods interspersed by short rest periods, and delivering de minimis power during a long off period, the long off period comprising a period less than or generally equivalent to said pulsed energy on period when de minimis power is applied and one long off period following each pulsed energy on period.
An apparatus comprising:
- a handpiece having a needle, said handpiece configured to ultrasonically vibrate said needle;
- a power source configured to provide electrical power to the handpiece;
- and
- a controller configured to control power supplied to the handpiece during a surgical procedure, said controller configured to control power supplied by applying ultrasonic power during at least one pulsed energy on period followed by at least one long off period, the pulsed energy on period having a duration shorter than or generally equivalent to each long off period, the pulsed energy on period comprising a series of short burst periods interspersed by short rest periods of minimal amplitude, wherein said long off period comprises normal operation of limited duration rather than manual suppression by an operator.
Dependencies are inferred from the claim text.